Quality Product and easy to useBy Jeffon 3/26/2015

Jeff would recommend this product to a friend

The phosphate reagent package is what keeps me from giving it 5 stars. Took a couple of tests to get it down. I use both vials one for the benchmark and the other for mixing the reagent. I use a small square of notebook paper fold it to make a crease to funnel in bottle. That way i can shake all the reagent out of packet and have an easier way to slide the powder into the vial. Beyond that the testing is easy.

The only phosphate tester you should useBy Nickon 3/22/2015

Nick would recommend this product to a friend

I have basically no algae in my tank, but I wanted to make sure and get accurate results as to what my phosphate levels were versus using liquid tests which are not always the most reliable. Little did I know that according to the Hannah checker, I have zero phosphate. There is a margin of error of +\- 0.04 but even 0.04 is still very good. Very happy with the purchase.
I wish hanna made a magnesium checker!

Would recommend this productBy BobGon 3/22/2015

BobG would recommend this product to a friend

Easy to use, accurate. Purchased to extend the length of time between GFO change out. Should pay for itself over time as I was changing GFO on a schedule and it appears I was changing out too often.

Great!By Patrick of Bay Area Coralon 3/16/2015

Patrick of Bay Area Coral would recommend this product to a friend

This is exactly as advertised. I will not go back to my old way of testing phosphate. My only gripe is the titrant used. It comes in these tiny bags which are difficult to put into the test tube. I would give it 4.5 stars, but I have to round down for this one.

Hanna Phosphate checkerBy Carlon 2/15/2015

Carl would recommend this product to a friend

I like the larger storage container that it come in! Easy to use and reliable.

Extremely accurate, no more color guessing.By Brianon 2/2/2015

Brian would recommend this product to a friend

Well built, and easy to use. I only have a couple caviars; if you follow the instructions the unit will turn off while you are mixing the reagent. I recommend mixing it while using the second included vial to zero the checker. It only comes with 6 reagent packs, so be sure to order more. Also when opening the battery door, be careful to pry it straight away, do not pry it off at an angle, you will bend the connected pieces.

Just short of greatBy ONAPon 1/19/2015

ONAP would recommend this product to a friend

I really love the idea of this test meter, but the execution needs a little help. For the most part, it's great. Love the design. Easy to use. No guessing at colors, unlike other test kits. The only real issues that I have with this tester are the limited number of reagent packets provided with a new test kit, and the reagent mixing time. The instructions tell you to shake the vial for 2 minutes after adding the reagent. The problem is that the meter shuts off after two minutes. Another sixty seconds and a few more reagent packets, and this would be a five star product.

GREATBy KONQUESTon 1/18/2015

KONQUEST would recommend this product to a friend

no more trying to match different shades of colors ,very accurate ,these hanna checkers are stress free and very easy to use ,I am looking to get all the hanna checkers now !

Accurate and Easy to useBy Dieteron 1/11/2015

Dieter would recommend this product to a friend

I like this test kit. For less than $50, I find it to be a bargain. Its easy to use and doesn't take long (about 5 minutes total). It's an important tester to have if you have a reef tank.

great productBy Danielon 12/28/2014

Daniel would recommend this product to a friend

Very easy to use. Very accurate.

Simple and accurate.By DivingTheWorldon 12/19/2014

DivingTheWorld would recommend this product to a friend

This is a very simple and accurate test for phosphate.

The one thing I will say though is that you need to use both test vials at the same time. The instructions talk about going through the test , then adding the powder, then shaking it up, then putting the vial back in. The shaking/mixing takes 2 minutes and the checker turns itself off during that time... So I fill both at the same time, add the powder to one, shake it up, then run through the test.

Works perfectly this way with very accurate results.

A "need to have" item.By Darrenon 12/15/2014

Darren would recommend this product to a friend

It's extremely hard to gauge phosphates with other tests because you're trying to pinpoint color differences with the naked eye. This gadget does all the hard work for you in minutes!!! Amen